Ratchet-drill



(No Model.)

' M. M. WATKINS.

RATGHBT DRILL.

Patented Nov. 10,1896# f, di

rn: Nowms persas cu.. PnoTaLrTHo wnsnmmo D c UNITED STATES PATENTOFFICE.

MAERNE M. WIATKINS, OF FERNWOOD, MISSISSIPPI.

RATCHET-DRILL.'

SPECIFICATION forming part of Letters Patent No. 570,973, dated November10, 1896. Application filed May 11, 1896. Serial No. 591,064. (Nomodel.)

To @ZZ whom t may concern:

Be it known that I, MAERNE M. WATKINs, a citizen of the United States,residing'at Fernwood, in the State of Mississippi, have invented certainnew and useful Improvements in Ratchet-Drills and I do declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it appertains tomake and use the same, reference being had to the accompanying drawings,and to the letters of reference marked thereon, which form a part ofthis specication.

The special object of the invention is to make a ratchet-drill whichwill conveniently work to the right or left, so as to suit allsituations.

Figure 1 of the drawings is a perspective view of my right-and-leftratchet-drill; Fig. 2, a median vertical section thereof. Fig. 3includes a number of detail views.

In the drawings, A represents the drillspindle, in which works theleft-hand feedscreW B and on which works the right-hand feed-nut C, bothof which are provided with side holes to receive the device used to turnthem, and either may be employed according` to the direction in whichthe spindle is to be rotated. The spindle A has a socket for asquare-shanked drill and a surrounding shoulder to support one side ofthe ratchet-lever H, between whose prongs rotates the ratchet D. Thelatter has rectangular notches, so as to form two opposite shoulders,against which the bottom inclined pawl F may Work equally well in eitherdirection. This bottom incline on the pawl, which is reversible and heldto the ratchet by a spiral spring G, enables it to be drawn back out ofthe notches. The pawl and spring on its cut-away shank f are droppedinto place through the lever H, on which is then screwed the handle I,whose inner end presses the spring. Hence the paWl may be reversed bysimply unscrewing the handle I and taking it out, while the left-handfeed-screw may be used by simply removing the right-hand feed-nut.

E is a key working in notches d a to hold wheel to spindle.

When it is desired to turn the drill. so as to feed to the right, thefeed-nut is used, and when it is required to feed the drill to the leftthe said nut is removed and the feedscrew employed.

Vhat I claim asnew and of my invention 1s- In a ratchet-drill, thecombination of a drillstock, reversible driving means therefor, an outerremovable right-hand feed-nut and an inner left-hand feed-screw,substantially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

MAERNE M. XVATKINS.

i ldfitnesses:

I. J. WATSON, N. P. SPAEKMAN.

